Improvement in music leaf-turners



G. C. A. CLASS. Y Improvement in Music Leaf Turners. No. 120,038'.l'Patentedecnwnen UNITED STATES y GEORG CABL AUGUST CLASS, OF CHICAGO,ILLINOIS.

IMPROVEMENT IN MUSIC LEAF-TURNERS.

Specification forming part of Letters Patent No. 120,038, dated October17, 1871.

To all whom it may concern:

Bc it known that I, GEORG CARL AUGUST CLASS, of Chicago, in the countyof Cook and State of Illinois, have invented new and 11nproved MusicLeaf-Turner; and l. do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art to make and use the same,

reference being had to the accompanying drawing forming part of thisspecification, in which- Figure l represents a plan or top view, partlyin section, of a piano provided with my improved music leaf-turner. Fig.2 is a front elevation of the same. Fig. 3 is an enlarged face viewofthe music-holder. Fig. 4 is a vertical section of the same on the linec c, Fig. 3.

Similar letters of reference indicate correspon din g parts.

The object of this invention is to provide a simple and eifectiveattachment to pianos, music-desks, and instruments, whereby the leavesof music can be easily turned to either side by a slight treadle motion.The invention consists in a new arrangement of vibrating levers or arms,which are, by cords, connected with the treadles, and provided withelastic end pieces for taking hold of and turning the paper by friction.The invention also consists in the use of a new seliadjustingpaper-holder.

A and B in the drawing are two wire levers or arms, each about eightinches long, and bent in shape by a rounded elbow, the ends slightlyturned up. These wires carry knuckles or balls aJ a, which have' theirbearings in slots of a bar or frame, C, placed and secured upon theinstrument. The front end of each arm A B carries an elastic bulb orlinger, m. The back ends of the two levers A B are connected with eachother by an elastic band, D, which is drawn over wires or other frames bthat are affixed to the ends of the piano. The band D has the tendencyof drawing and keeping the levers A B down. Small rings d arc drawnthrough the levers A B, near their back ends, to connect the same byropes or cords E E with treadles F and G, respectively. The cords E passover pulleys c, which are hung in framesf fastened to the ends andbottom of the piano. The treadles are or may be surrounded by rubberrings g, to which the cords E or wires h, connecting with the same, aresecured. H H are two spiral springs of iine wire, connected with theband D and tted through the bar C, so that their spiral parts are infront of said bar. sic are put between the coils of the springs' H andthereby separated. To insure the turning of single leaves in sheet-musiclittle pinchers yi fz'. or round springs are secured to an elastic cord,j, held vertical by an upright wire, k, which projects from the centerof the piano. This wire k carries another sliding spring, Z, whereby asheet, I, of pasteboard is held in place as a supportfor the musictolean against. rlhe little pinchers or round springs t' are fastened tothe elastic cord j by means of a thin wire, on which they can easilyturn. rI`he whole arrangement can be laid down whenever the pasteboardsheet is disconnected from the wire.

The paper is applied by leaning it against the plate or sheet I, puttingthe leaves between the convolutions of the springs H. Loose sheet-mu sieleaves are only held by sliding the pinchers fi over their edges fromabove or below.

Whenever a pedal, F or G, is used the elastic finger m is elevated anddoubles the leaf with which it is in contact 5 it is then, by a suddenrelaxation of the foot, quickly brought back to its original position,and moving quicker than the paper, is brought behind the leaf. By thenext motion of the treadle the iin ger swings the leaf clear over, andthen by a gradual relaxation of the treadle the finger moves back to itsfirst position.

The apparatus can be applied to pianos, organs, music,'andreading-desks, and similar devices.

Having thus described my invention, I claim as newv and desire to secureby Letters Patent- 1. rIhe swinging arms A B, connected with the elasticband D and with the treadles F G, and provided with the elastic lingersm, to operate substantially as herein shown and described.

2. The spiral springs H H applied to the music leaf-turning apparatusfor holding the leaves the requisite distances apart, as specied.

3. The paper-holding apparatus, consisting of the pinchers t' i, elasticcork j, wire k, slide l, and sheet I, all arranged substantially asherein shown and described.

G. C. A. CLASS.

The several leaves of mn-

